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Rexroth R911311905 MSK100B-0200-NN-M2-AG0-RNNN Servo Motor
| Place of Origin | Germany |
| Brand Name | REXROTH |
| Model Number | MSK100B-0200-NN-M2-AG0-RNNN |
Product Overview
The Rexroth R911311905 MSK100B-0200-NN-M2-AG0-RNNN is an industrial synchronous servo motor configured for precision motion axes requiring multiturn absolute feedback. It combines the MSK100B-0200 base motor with natural-convection cooling, an M2 EnDat 2.1 encoder, A-side connection, plain shaft and increased-concentricity construction.
Material number R911311905 is the preferred ordering reference. The complete model must also be retained because visually similar MSK100B motors can use different encoder interfaces, shaft versions or mechanical-accuracy classes.
Main Specifications
| Material Number | R911311905 |
| Complete Model | MSK100B-0200-NN-M2-AG0-RNNN |
| Base Motor | MSK100B-0200 |
| Cooling | Natural Convection |
| Encoder | M2 Optical Multiturn Absolute EnDat 2.1 Encoder |
| Connection | Fixed Connector on Side A |
| Shaft | Plain Shaft with Shaft Sealing Ring |
| Holding Brake | Without Holding Brake |
| Design | RNNN, Increased Concentricity |
| Protection Class | IP65 |
Base-Motor Technical Data
| Maximum Speed | 4,100 rpm |
| Continuous Torque at Standstill | 28 Nm |
| Maximum Torque | 102 Nm |
| Continuous Current at Standstill | 14.7 A |
| Maximum Current | 66.2 A |
| Rotor Moment of Inertia | 0.0192 kg·m² |
| Approximate Basic Motor Weight | 34 kg |
Encoder and Mechanical Design
The M2 encoder is an optical multiturn absolute feedback system using the EnDat 2.1 interface and 2,048 signal periods. It is suitable for machines that require absolute position information across multiple motor revolutions. The drive, firmware, motor parameter file and encoder cable must support M2 feedback.
The plain shaft is intended for a suitable clamping or friction-locking coupling. It should not be substituted directly for a keyed-shaft motor without checking the existing coupling. Brake code 0 confirms that no holding brake is installed.
The RNNN suffix means increased concentricity. It does not by itself indicate ATEX construction. Increased concentricity can be important for precision couplings, direct-drive mechanisms, printing rollers, measuring systems and machine axes sensitive to shaft runout.
Typical Applications
Typical uses include machine-tool feed axes, printing machinery, converting equipment, packaging systems, automated handling equipment, winding machinery and precision production modules. Final suitability depends on torque, speed, acceleration, load inertia and thermal requirements.
Replacement Notes
- Match material number R911311905.
- Verify the M2 EnDat 2.1 feedback interface.
- Confirm the A-side connector position.
- Check the plain shaft and coupling.
- Confirm that no motor holding brake is needed.
- Retain the RNNN increased-concentricity design where required.
Preferred inquiry reference: Rexroth R911311905 / MSK100B-0200-NN-M2-AG0-RNNN.
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